Saw-hammering machine



'(Nb Model.) 2 Sheets-Sheet 1. w. G-OWE'N.

SAW HAMMERING MACHINE.

No. 372667. Patented Nov. 8, 1887.

WITNESSES:

ATTORNEY (No Model.) 2 Sheets-Sheet 2. W. GOWBN.

SAW HAMMERING MACHINE.

N0. 372,667. Patented Nov. 8, 1887.

l limll l awu N PETERS, Phomuhu m her. Walhmglon. .c.

NITE STATES PATENT Fries.

\VILLIAM GOlVEN, OF VVAUSAU, \VISGONSIN.

SAW-HAMMERING MACHINE.

SPECIPICATICN forming part of Letters Patent No. 372,667, dated November8, 1887,

Application filed January 6, 1887.

To all whom it may concern:

Be it known that I, WILLIAM GowEN, of Vausau, in the county of Marathonand State of \Visconsin, have invented a certain new and useful SawHammering Machine; and I do hereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it pertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form a part ofthisspccification.

The object of my invention is to produce with facility and accuracy theproper tension in a'saw.

It consists, essentially, of an anvil, a hammer working therewith,mechanism for operating the hammer, a support for holding the saw intheproper position to be operated upon by said hammer, of mechanism formoving the saw-support and feeding the saw between the hammer and anvil,of mechanism for regulating the force of the blows struck by thehammer,and of other features hereinafter set forth.

In the accompanying drawings like letters designate the same parts inthe several figures.

Figure 1 is a plan view of the machine; Fig. 2 is a side elevation ofthe same. Fig. 3 is an end elevation,on an enlarged scale,of the slidingframe supporting the hammer and its connections and of the ways in whichit works. Fig. 4 is a side elevation of a portion of the same and of thescrew by which said sliding frame is adjusted. Fig. 5.is a verticalmedial section of the circular-saw:snpporting carriage and itsconnections. Fig. (5 is a crosssection taken on the line y y, Fig. 2,showing one of the machine-frame supports in detail; and Fig. 7 is across-section on a greatly enlarged scale, taken on the line a: a2,Figs. 1 and 2, showing the hammer-supporting frame and driving mechanismin side elevation.

The hand method of hammering saws, as heretofore practiced, is not onlylaborious, requiring skill and experience, but by it the work is at bestimperfectly done, it being impossible to strike a series of blows byhand with the precision and uniform force which are necessary to producethe best results. To obviate the foregoing difficulties inhammering-saws by hand is my purpose in the following-described machine.

Serial No. 223,516. (No model.)

Referring to the drawings, N N represent the frame-work, which may be ofany suitable form, material, and construction to support the operativeparts of the machine. Upon this frame N are mounted the hammer-carriageM in transverse ways m m provided therefor, a cross picce, N, supportingthe adjustable anvil B, the circular-saw-carriage O on longitudinal waysa it provided therefor, and the yoke P, adjustable lengthwise of saidframe N in ways 1) 17, secured thereto. The hammer-carriage M is formedwith planed tongues mm,engaging and working with similar grooves in theways m m. A screw, R, with a hand-wheel, It, is swiveled next to saidhand-wheel in afixed box, r, bolted to the ways in in, and works, asshown in Fig. 4, with a nut, m on the upper side of carriage M, whichmay be adjusted thereby transversely to the frame N of the machine.

In a standard, H, rising from one end of the carriage M is fixed andsupported the shaft g, upon which is mounted the ratchet-wheels g andbetween said ratchet-wheels the hub of the vibrating hammer-arm A. Aboutthe hubs of the hammer-arm A and the ratchetwheels g" are placed spiralsprings g g, which are attached at their inner ends to the oppositesides of said hammer-arm and at their outer ends to said ratchet-wheels.To the end of the hammer-shaft g opposite the standard H is keyed orotherwise axed the casting H. To suitable ears formed therefor on thestandard H and casting H are pivoted dogs If h which engage with theratchetwheels 9".

Upon the hubs h h, formed on the outer faces of the standard H andcasting 11, about the hammer-shaft g, are journaled the lovers G G, towhich are pivoted the pawls g 5 engaging the ratchet-whcels g g. In asleeve or car formed on the free end of the arm A is secured, by meansof a nut, a, the threaded shank of the hammer a, which is preferablymade of steel, with a rounded face. The anvil B, also prefer-ab] y madeof steel, wit-h a rounded working-face, is supported upon the crosspiecer and moved thereon with the adjustment of the carriage M and hammer a,and retained in the proper position to receive centrally the blows ofsaid hammer by means of the arm B, which is secured at one end to saidcarriage M and at the other to an ear or flange, b, formed onsaid anvil,as shown in Figs. 1, 2, and 5.

In boxes h h, formed one upon the standard H and the other upon thecasting H, is journaled the driving shaft E, upon which is mounted thehammer-actuating cam e, driving-pulley E, and friction-wheel E The shaftE is held in place endwise in its bearings by means of collars mountedthereon and bearing against the inner ends of the boxes h h, and isthereby caused to move with the hammer-shaft in the adjustment of thecarriage M.

Upon one end of the shaft F, bearing in boxes ff, secured to the frame Nof the machine, is mounted the friction-wheel F, which has a beveledface working with the similarlygrooved face of the friction-wheel E Theshaft E, provided with a feather or spline to prevent them from turningthereon, moves endwise freely through the eyes of the pulley E andfriction-wheel E which are connected or formed together and preventedfrom partaking of the cndwise movement of said shaft by the grooved faceof said frictiouwheel E engaging the friction-wheel F.

G G are pulleys or drums arranged at opposite ends of the machine, toreceive and support a band-saw in the proper position to be operatedupon by the hammer. The shaft 0 of the drum, 0, nearest to the drivingmechanism is journaled in boxes 01, swiveled to and depending fromslides d cl, which are adjustable lengthwise of frame N in grooved waysprovided therefor and secured to said frame. Upon the end of shaft 0, inposition to engage the friction-wheel F on shalt F, is secured thelarger friction-wheel D. The slide d adjacent to the friction-wheel D isconnected with the upright limb of the bell-crank lever D, fulcrumed toframe N, as seen in Fig. 2, and a weight, D upon the horizontal limb ofsaid lever retains the friction-wheel D in engagement with saidfriction-wheel F.

By reference to Figs. 2 and ,7 it will be seen that the Jir-iving-shaftE is placed above the shaftFand the shaftF in a position above the:shaft 0, and that the boxf, in which the shaft F bears adjacent to thefriction-wheel F, is hinged to the frame N, as shown in Fig. 1. When thefriction-wheel D is forced by lever D against said friction-wheel F, thelatter is elevated, lifting the friction-wheel F into engagement withthe friction-wheel E" on the drivingshaft E, from which motion iscommunicated through said friction-wheels to the pulley or drum 0, andthe saw S thereby fed between the hammer and anvil parallel with theframe N. The slide (2 on the side of the machine opposite the lever D islongitudinally slotted and adjustably secured in place to frame N bymeans of the bolt cl, passing through the slot in the said slide, asshown in Fi l.

. The shaft 0' of the pulley or drum 0 bears 'in boxcs secured to anddepending from the ends of the yoke P, overhanging the frame N,

as shown in Figs. 1 and2; By means of a screw, p pivoted at the end inan ear, 10, formed on the yoke P and engaging with a nut formed on across-bar, P, secured to the frame N of the machine, said yoke may bemoved in its ways and the saw thereby sufliciently strained to be fed bythe rotation of drum 0 between the hammer and anvil. To facilitateplacing the saw on the drums O O, the hammershaft g and thedriving-shaft E are supported at one end only upon the earriage M bymeans of the standard I-I, thereby leaving at their opposite ends aspace or opening, through which the upper seetionof the saw may beinserted; and the supports N N, upon which the frame N rests, are formedat one side of the machine with hinged sections an, as shown in Figs. 2and 6, so as to be opened to receive the lower section of the saw.

To support a circular saw in the proper position to be operated upon bythe hammer a, I provide the carriage O with an upright journal, 0, uponwhich is mounted the bevelgear 0, as shown in Fig. 5. Upon the upperface of the hub of the gearo the saw Uis supported and secured by meansof the collar 0 and a retaining-nut engaging a threaded pin, 9,projecting from the center of' said hub. Upon the shaft I, supported insuitable bearings provided therefor lengthwise of the frame N, isloosely mounted the bevel-gear i, which works through an opening incarriage O with the bevelgear o, and is prevented from turning upon saidshaft by means of a spline or feather, while it is moved by projections0 0 upon the carriage O lengthwise of said shaft and retained inengagement with the saw'supporting gear 0. Upon the opposite end of theshaft I, adjacent to the shaft F, is fixed a bevel-gcargf, working witha similar gear, f upon said shaft F, by means of which the shaft I andthe gears i and 0 are driven.

To a projection, 0, on carriage O is adj ustably attached a rack-bar, T,supported at the opposite end in a suitable guidebearing formed upon orattached to the frame of the machine. Upon the adjacent end of shaft Fis fixed the disk F having a single tooth,f, on its periphery, whichengages at each revolution with a tooth on the rack-bar T, therebymoving the said carriage an interval lengthwise of the shaft I to eachrevolution made by the gear 0 and the saw U supported thereon.

My machine operates as follows:

First, when a band-saw is to be hammered, the collar 0 and center pin,0", with thenut thereon, are removed, as seen in Fig. 2, or the entiresaw-supporting gear 0, with its connections, may be lifted from itsjournal 0. The rack-bur T may be removed or disconnected from the disk FThe sawS is then placed upon the drums or pulleys GO in the mannerpreviously described, and the drum 0 adjusted by means of-the screw 19to take up any slack in said saw and to cause the drum 0 to drive thesame at the desired speed over the anvil B. In hammering a band-saw Iprefer to hammer once around the longitudinal center thereof, and thento hammer in parallel lines equidistant from the center, alternatingfrom one side thereofto the other. For this purpose a chalk-mark may bemade upon the saw to indicate the starting-point, and the hammer a andanvil B, first set at the center of the saw, moved to either side bymeans of the screw R each time the starting-point indicated by thechalk-mark returns to said anvil. The ma chine being set in motion bymeans of suitable power applied thereto through the drivingpnlley E, thecam e, rotated as indicated by arrows, Figs. 1 and 2, and working withan extension of the hammer-arm A, alternately lifts and releases thehammer a. The springs g g,compressed or strained each time the hammer islifted by the cam c, act through the hammer-arm A, and by theirexpansion cause the hammer, when it is released by said cam, to dealuniform blows of the desired force upon the saw over the center of anvilB. The force of the blows struck by the hammer may be regulated asdesired by means of the levers G G and pawls 9 which work with theratchet-wheels g" and operate to strain the springs g g. If the tensionof the springs and the impetus imparted thereby to the hammer be toogreat, the dogs if if may be thrown out of engagement with theratchet-wheels g and the latter turned backby the aid of said levers GG. Through the friction-wheels E F F and D, rotated as indicated by thearrows in Figs. land 2. the d rum C,and thereby the saw S, is drivenfrom the shaft E. The operation is repeated, if necessary, as describeduntil the saw has been opened up sufficiently at the center and thedesired tension produced in the edges. By swinging the lever D outwardor away from the shaft E the friction-wheel F is disengaged from thefrictionwheel E, and the shafts c and F thereby disconnected from thedriving-shaft 13.

Second. For hammering a circular saw, the saw U is secured to the hub ofthe gear 0, as shown in Fig. 5.and the hammer and anvil are set in theirmiddle position in the longitudinal center of the machine. The carriageO is placed with reference to the anvil B so as to cause the hammer tostrike the saw at the desired distance from the eye, and the machinethen set in motion. The saw is slowly rotated by the gearsz' o and shaftI while the hammer strikes a circular series of uniform equidistantblows thereon. At the completion of each revolution the tooth f on diskF, engaging with a tooth of the rack T, moves the carriage O a certaininterval away from the arvil, and the hammer deals in the mannerdescribed another series of blows concentric with those previously made.The operation is thus continued toward the rim of the saw until thedesired tension is produced therein. 1f the .desired effect is notproduced by the hammer in traversing the saw once,the attachment of thecarriage O to the rack T may be changod,so as to cause the hammer tostrike between the circular lines of blows previously made, and theoperation repeated as before till the desired tension is attained in therim of the saw. To straighten a saw that has been bent, the carriagemaybe disconnected from the feeding mechanism and the saw supportedthereon moved as desired by hand.

Devices different from those shown may be employed for supporting eithera band or circular saw, and arranged to be moved by the operator withoutthe automatic mechanism described. In short, various modifications maybe made in the construction and arrangement of the several parts of mymachine withoutdeparture from the principle of its operation or thespirit of my invention.

I do not claim, broadly, herein the combination, with the hammer andanvil, of a circularsaw support arranged to be moved toward and fromsaid anvil, but make that the subjectmatter of an application filedJanuary 18, 1887, and numbered 224,701.

I claim- 1. In a saw-hammering machine, the combination, with a hammerand anvil, ofa vibrating ham mer-arm, a shaft supporting saidhammcrarl'n, a spring connecting said hammer with a ratchetwhcel, and alever and pawl arranged to turn said ratchet-wheel and strain saidspring, substantially as and for the purposes set forth.

2. In a saw-hammering machine, the coin bination, with a hammer andanvil, of mechanism arranged to operate said hammer, an adjustablespring arranged to impart an impetus to and to regulate the force of theblows of said hammer, a saw-supporting device arranged to hold the sawin position to be 0peratcd upon by said hammer, mechanism for moving thesaw between said hammer and anvil, and mechanism arranged to change therelative positions of the saw and anvil, whereby the hammer is caused todeal a succession of :10

blows upon said saw in parallel lines, substantially as and for thepurposes set forth.

3. The combination, in a saw-hammering machine, of the hammer and anvil,the driving-shaft provided with a pulley, E, and a wheel, E", workingbelow its center with a wheel, F, on the shaft F, shaft F, bearingadjacent thereto in a movable box and carrying another wheel, F whichworks below its center with the wheel on the drum-shaft a, bearingadjacent thereto in a movable box, and a lever arranged to move saidwheels into and out of engagement, substantially as and for the purposesset forth.

4:. The combination, in a saw-hammering machine, of a hammer and anviladjustable transversely to the saw, mechanism for operating the hammer,and drn ms arranged to support the band-saw between said hammer andanvil, substantially as and for the purposes set forth.

5. The combination, in a saw-hammering machine, with supporting-drums,of a slide adjustable transversely to the saw, a hammer IIS and anvilcarried by said slide, and mechanism arranged to feed the saw betweensaid hammer and anvil, substantially as and for the purposes set forth.

6. The combination, in a saw-hammering machine, ofa laterally-adjustablchammer and anvil, mechanism arranged to operate said hammer, drumsarranged to support a bandsaw between said hammer and anvil, and a screwarranged to move said hammer and anvil together transversely to the saw,substantially as and for the purposes set forth.

7. The combination, in a saw-hammering machine, with a-hammcr and anvil,ofa frame, drums mounted thereon and arranged to support a band-saw inposition to be operated upon by said hammer, and supports for said framehaving a hinged or removable section to facilitate placing said saw uponsaid drums,substantially as and for purposes set forth.

8. The combination, in asaw-hammering machine, of a supporting-frame, acarriage movable transversely upon said frame, a hammer mounted uponsaid carriage, an anvil connected and movable therewith, mechanism foroperating the hammer, and drums arranged to support a band saw in properposition to be' operated upon by said hammer, Substantially as and forthe purposes set forth.

9. The combination in a saw-hammering machine, of band-saw-supportingdrums, a carriage movable transversely to the saw, a hammer and itsactuating-cam mounted upon said carriage, an anvil connected and movabletherewith, and suitable gearing connecting the camshaft. with one ofsaid drums, substantially as and for the purposes set forth.

10. The combination, in a saw-hammering machine, of the hammer andanvil, a circularsaw-supporting gearjournaled upon a carriage movabletoward orfrom the anvil, a feathered shaft placed parallel with the waysupon which said carriage travels and connected by suitable gearing withthe driving mechanism,and a gear mounted upon said feathered shaft andarranged to be moved with said carriage in engagement with thesaw-supporting gear mounted thereon, substantially as and for thepurposes set forth.

11. The combination, in a saw-hammering machine, of the hammer andanvil, a circularsaw-supporting carriage movable toward and from saidanvil, a rack adjustably connected with said carriage, and a spurworking with said rack and arranged to impart an intermitting movementto said carriage, substantially as and for the purposes set forth.

12. The combination, in a saw-hammering machine, of the hammer andanvil, a circularsaw-snpporting carriage and mandrel movable toward andfrom said anvil, a rack attaohed to said carriage, and a rotary shaftprovided with a spur working with said rack and arranged to impart anintermitting movement to said carriage, substantially as and for thepurposes set forth.

In testimony that I claim the foregoing as my own I aflix my signaturein presence of two witnesses.

\VILLIAM GOYVEN.

Witnesses:

GHAs'L. Goss, E. G. AsMUs.

